Astrophysics (Index)About

UBV photometric system

(Johnson System, Johnson-Morgan System)
(commonly-cited photometric system for describing stars' colors)

The UBV photometric system, also called the Johnson system or Johnson-Morgan system, is an early well-accepted photometric system and is a system generally assumed if no other system is specified or implied. It specifies U, B, and V passbands, in turn, specifying specific B-V and U-B color indices. Magnitudes are calibrated as zero for A0 V stars unaffected by reddening.

The UBVRI photometric system, i.e., Johnson-Cousins system is an extension with red and infrared passbands, R band and I band.


(EMR,color,magnitude,photometry)
Further reading:
http://en.wikipedia.org/wiki/UBV_photometric_system
http://en.wikipedia.org/wiki/Photometric_system
https://www.astro.caltech.edu/~george/ay122/Bessel2005ARAA43p293.pdf
http://spiff.rit.edu/classes/phys373/lectures/colors/colors.html
http://www2.lowell.edu/users/massey/13_PhotometryII.pdf
https://ui.adsabs.harvard.edu//abs/2007ASPC..364...27L/
https://ui.adsabs.harvard.edu/abs/1953ApJ...117..313J/abstract
https://ui.adsabs.harvard.edu/abs/1976MmRAS..81...25C/abstract

Referenced by pages:
B
color index
I band
north polar sequence (NPS)
passband
photometric system
rare designator prefixes
Strömgren photometric system
U
V
Vega system

Index